Hello AJ. A good garage floor coating should not require a degreaser in most cases. Oil should clean right off with little effort. Strong degreasers such as Oil Eater or Purple Power can sometimes cause the coating to degloss if used in a heavy concentration. We recommend a weak concentration first. If you have a very old coating that is scratched up or a poor quality coating, then oil and other contamination can get embedded. If that is the case, then you can use a mixed at the recommended strength.

Hi Bill. The first thing that needs to be done is to clean the concrete with a good degreaser and scrub brush. If you have access to a floor maintainer or rent one from your local home improvement center along with a couple of green or black scrub pads, you will be amazed at what you can clean up. Acid etching will remove rust, but not oil and dirt. Also, you do not want to acid etch if you have no intention of applying a good sealer or coating. The etching will make the surface rougher and open the pores of the concrete. This only aids in collecting and soaking in more dirt. You purchase concrete rust removing products that do not etch the concrete like acid does. Just look online or at your local home improvement center.

Hi PZ. Diamond Deck mats are made overseas and are known to have this issue from time to time with their materials. If it was a store bought epoxy paint, then i’m afraid it’s not going to clean up from that very well. Even less so if it was a 1-part epoxy paint.